[Pharmacokinetics of carvone and menthol after administration of peppermint oil and caraway oil containing enteric formulation].

Enteric coating of peppermint oil/caraway oil capsules avoids subjective discomfort to the patient caused by gastroesophgeal reflux. In order to confirm bioequivalence of an enteric coated formulation containing peppermint oil and caraway oil (Enteroplant) and an immediate release formulation of both oils, the pharmacokinetics of menthol and carvone after oral administration of the two formulations were studied in a randomized, two-period crossover study in 16 healthy male volunteers. The subjects received 180 mg peppermint oil and 100 mg caraway oil, once as 2 enteric coated capsules of the fixed combination preparation Enteroplant containing 90 mg peppermint oil and 50 mg caraway oil each (test) and once in the form of 5 capsules of an immediate release formulation (reference) containing 36 mg peppermint oil and 20 mg caraway oil each.